Ok, here's a quick guide to some FX and the uses of them:
Compression
Compression is an insert effect
Compression is quite a difficult concept to understand. I think it's best to think of it as a "phattening" tool. Compression can easily give stuff more punch - apply it correctly to basses, kick drums, snares, vocals, the entire mix, to add extra punch. Compression can be qutie tricky to work out. I reccomend reading some articles on it. There are some great ones just about
here
Reverb
Reverb is a send effect[/b]
Reverb adds depth to a sound. The more reverb you put on a sound, the further away it appears to be to the listener. There are may different types of reverb, plates, halls and chambers are most commonly used. Reverb sounds good on snares, cymbols, vocals, guitar lines, etc. However, stay away from using reverb on bass or too much on kick drums as it will "muddy" things up quickly. Also, go easy on the reverb, too much and it sounds cheesy.
Delays
[i]Delay can be both a send effect and an insert effect.
Delays help to "thicken" sounds and make them sound a lot bigger. For exaple, adding a delay to a vocal line will make it "fill space" in the mix and geneerally bring it to the front. Delay also sounds good on guitar and keyboard lines. It can sound very trippy if used on drums. It is also a good idea to "tempo synch" the delay time to the BPM of your track to keep everything sounding tight.
Phaser
Phaser can be both a send effect and an insert effect.
Phasers will add a very specific sound when used - kind of like a jet engine going past. Phasers can sound good on certain drum fills, vocal lines, guitar riffs, etc. However, it is not something you want to "overuse" as it can also sound very cheesy and dated. It is also a good idea to temp synch the LFO of the phaser to keep sweeping smoothly and in time.
And now, a couple of pointers. Compression after reverb will really help pull out the "decay" of the reverb and make things sound a lot chunkier. Also, don't forget EQ, EQ is an essential part of sound creation, and it's important to know when and how to use EQ correctly to make things sit together.
I can't think of any more effects on the MPC4ooo at the moment (I don't use them too often) - if you need to know more let me know...
laters
jues.